Traveling from St Pancras International to Heathrow Airport by Tube typically costs around £6-£7 for a single journey using an Oyster card or contactless payment. The journey involves taking the Piccadilly Line directly to Heathrow, which takes about 50-60 minutes. Prices may vary slightly depending on time of travel and payment method. Always check the Transport for London (TfL) website for the most current fare information.
Tube (underground train).
No. You can get a tube train from Heathrow into central London and then an overhead train from London to Luton.
Train to Kings Cross and then tube to Heathrow.
Walk
The Piccadilly Line
To travel from Heathrow to Kings Cross using the tube, you can take the Piccadilly line from Heathrow Airport to King's Cross St. Pancras station. The journey takes approximately 50 minutes.
The easiest way to get to Paddington from Heathrow is using the train - it's an express one & take 15 mins. I think it costs about 15 pounds. You can get there by tube but it'll take you a lot longer (maybe just over an hour). Take the Piccadilly line to Piccadilly Circus & then change to the Bakerloo line. Take the Bakerloo north to Paddington. The tube will cost around 6 pounds.
Take the tube to London Euston and get a train from there.
not that long...
Underground (tube) train.
Take the tube from Heathrow to Acton Town then change onto a Piccadilly line train towards Uxbridge.
Take the Piccadilly underground (tube) line directly to St Pancras from all terminals at Heathrow.